OOAD Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

OOAD Interview Questions

Questions Answers Views Company eMail

If a method definition has been specified in class , its base class , and the interface which the class is implementing, which definition will be picked if we try to access it using interface reference and class object?

981

What is difference between encapsulation and abstraction?

992

Difference between encapsulation and data hiding ?

889

Difference between abstraction and implementation hiding ?

1082

What are the features of encapsulation ?

983

Difference between composition and inheritance ?

960

Are constructors inherited? Can a subclass call the parent's class constructor? When?

986

Can we reduce the visibility of the inherited or overridden method ?

1019

Which of the following is tightly bound ? Inheritance or composition ?

1 1644

Does a class inherit the constructor of its super class?

932

How many methods do u implement if implement the serializable interface?

951

What does the “abstract” keyword mean in front of a method? A class?

966

How many methods are there in the externalizable interface?

1003

What interface must an object implement before it can be written to a stream as an object?

1067

What does it mean that a method or class is abstract?

958

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Un-Answered Questions { OOAD }

Name some languages which have object oriented language and characteristics?

984

What is the default access specifier in a class definition?

1010

What is the main difference between a class and an object?

1003

Give any criteria when you use an abstract class and an interface?

932

What are abstract functions? Why are they used?

993

Can we have a default method definition in the interface without specifying the keyword "default"?

962

Explain about the relationship between object oriented programming and databases?

929

Can encapsulation be called as a security device?

980

Explain about the analysis phase?

978

Can a class in java be inherited from more than one class?

922

What is the difference between public, private and protected access modifiers?

1035

Explain the meaning of object in object oriented programming?

1053

What is the use if instanceof keyword?

1143

What is Overloading ? Is it similar to overriding ?

1000

What do you mean by "explicitly implemeting an interface". Give an example?

1000

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